MESON Chess Problem Database

Problem Display
PID: 81483 (R3K2Q/1k6/N7/2P5/8/8/6R1/8 w - - 0 1)

Hoffmann, Klaus Peter

Heilbronner Stimme, 1994

R3K2Q/1k6/N7/2P5/8/8/6R1/8

#2

6 + 1

6114 Problemschach-Jahrbuch (1994) 1995
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • 1...Kc7
        • 2.Rg7#
        • 2.Qg7#
        • 2.Qh7#
      • 1...Kxa8!
    • 1.Rb2+?
      • 1...Kc6
        • 2.Qh1#
      • 1...Kxa8!
    • 1.Rg7+?
      • 1...Kxa8
        • 2.Qh1#
      • 1...Kc6!
    • 1.Qb2+?
      • 1...Kxa8
        • 2.Qb8#
      • 1...Kc6!
    • 1.Qd4?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kc6
        • 2.Qd7#
      • 1...Kxa8!
    • 1.Qe5?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kxa8
        • 2.Qb8#
      • 1...Kc6!
    • 1.Qg7+?
      • 1...Kc6
        • 2.Qd7#
      • 1...Kxa8!
    • 1.Qh2?
      • 1...Kxa8
        • 2.Qb8#
      • 1...Kc6!
    • 1.Qh3?
      • threat
        • 2.Qc8#
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd7#
      • 1...Kxa8!
    • 1.Qh7+?
      • 1...Kc6
        • 2.Qd7#
      • 1...Kxa8!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Rg1#
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rh2#
        • 2.Rg3#
        • 2.Rg4#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Rg7#
        • 2.Rg8#
      • 1...Kc6
        • 2.Rb2#
      • 1...Kxa8
        • 2.Rg7#

Anticipated by 4580(1880)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • Q(F);
    • Threat
      • DUALS(14)
    • Vars
      • K(a);S_FLIGHT::QAB(F)+R(A)
      • K(a);S_FLIGHT,XR(D)::QAB(F)+R(A)
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